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Re: Optimal interpolation [message #31961 is a reply to message #31856]

Wed, 28 August 2002 11:19

Paul Van Delst[1]
Messages: 1157
Registered: April 2002

Senior Member

GB Karas wrote:
>
> sinc interpolation relies on the following interpolating kernel:
>
> sinc(x)=sin(x)/x

Why don't you use FFT's to do the interpolation then? You know, FFT the curve in question, zerofill
(or truncate) the result and FFT back?

paulv

>
> Paul van Delst <paul.vandelst@noaa.gov> wrote in message news:<3D653F9D.223EDD66@noaa.gov>...
>> GB Karas wrote:
>>>
>>> oh well.. i think that really depends on your data
>>>
>>> i analyze MRI data, so I have to use sinc and windowed sinc
>>> interpolation
>>
>> OT, but...
>>
>> What is sinc (and windowed sinc) interpolation?
>>
>> paulv

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Paul van Delst
CIMSS @ NOAA/NCEP/EMC
Ph: (301)763-8000 x7274
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[Message index]

		Optimal interpolation By: Luis on Wed, 21 August 2002 06:47
		Re: Optimal interpolation By: Robert Stockwell on Wed, 28 August 2002 13:47
		Re: Optimal interpolation By: Paul Van Delst[1] on Wed, 28 August 2002 11:19

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